Friedrich drumm



(No Model.) I '2 Sheets-Sheet l.

P. DRUMM.

I THERMOCAUTER. I No. 574,719. PatentedJanQ 5, 1897.

l/VVE/VIOR 3 Arron/VH5 (No Model.) 2'Sheets--She'et 2. F. DRUMM.

THBRMOGAUTER.

Patented Jan. 5, 1897.

No. 574,719 F4 1 A TTOIM'E Y3 INVENTOR WITNESSES:

UNITED ST TES PATENT,

FRIEDRICH DRUMM, or NEw YoRK, N. ,x.

THERMHOQAUTE'R.

SPEGIFICATIONforming part of Letters Patent No. 574,719, dated January5,1897.

A V A, Application filed January 10, i896. 'Serlal No. 574,998. (Nomodel.)

To all whorlt it may concern..- 3 Be it known thatl, FRIEDRICH DRUMM, 0

New York vcity, in the countyand State of New York, have invented anewandlmproved Thermocauter, of which the following is a f 1111,;

clear, and exact description. I

The object of the invention is toprovide a new and improved thermocauterwhich is simple anddurable in construction, very effective in operation,and arranged to permit the operator to conveniently heat-the cauter-'izing-tool externally when starting the appawill be fully describedhereinafter and then pointed out in the claims.

Reference is to behad to the accompanying drawings, forming a partofthis specification, in which similar characters of referenceindicatecorresponding parts in all the figures.

Figure l is a side elevation of .the improvement, showing the'auxiliaryburner in position for heating the tool. Fig. 2 is a like view of thesame with the auxiliary burner removed and the tool heated internally.Fig. 3 is a rear side elevation of part of the improvement,showing themeans for disconnecting the auxiliary burner from the supply-pipe valve.Fig. 4 is a face view of part of the im provement, indicating theseveral positions.

of the burner. Fig. 5 is a sectional side elevation of the valve. Fig. 6is a cross-section of the auxiliary burner on the line 6 6 of Fig. 1.Fig. 7 is a sectional side elevation of the point and adjacent part.Fig. 8 is a like View of the upper end of the gas-supply pipe and thecombustion-shell. Fig. 9 is a sectional side elevation of thegas-generator, the auxiliary burner, and the supply-pipe, with the valvein position for connecting the generator with the auxiliary burner. Fig.10 is a sectional plan view of the generator on the line 10 10 of Fig.9. Fig. 11 is a sectional side elevation of part of the generator andsupply-pipe,with the valve in position for connecting the generator andsupply-pipe. Fig.

12 is a sectional side elevation of the point,

internal burner for the same, and the auxiliary burner; F,ig..;13 isasectional plan view of. the internal burner on tl1'eline'13 13 of Fig.12.; and Fig. 14 is a reducedperspective view of the improvement,showing the auxiliary burner in action. v i

. The improved thermocauter is provided] with a suitably-constructedgas-generator A for generating the gas and heating the cauterizing tool;externally and internally, as hereinafter 1n ore fully described. I Thegenerator A forms the handle for the instrument and is preferablyfilledin its lower portion withcotton or like loosematerial, saturated I Iwith benzene orlike.liquid for producing an inflammable'gas- The lowerendofthe generatorA is connected by arubber tube B with air-bulbs C,.o'fthe usual construction, to permit of forcing a continuous stream of air79 through the generator and the saturated 1naterial to producethedesired inflammable gas in the upper portionof the generator A. The gasthus generated is passed from the upper end of thegenerator into agas-supply pipe D,"supporting at its extreme upper endthecauterizing-tool E, made hollow and preferably of platinum or likematerial, the shape of the tool varying according to theintended use.

In the lower end 'of the supply-pipe D and next to the generator A isarranged a twoway valve F, adapted to connect and disconnect thegenerator A with and from the supplypipe D and connect and disconnectthe gener- 8 5 ator A with and from an auxiliary burner G for externallyheating the tool E in starting the apparatus.

The valve F is provided with a valve-plug F, formed with two ports orchannels a and b, of which the port a extends diametrically and servesto establish communication between the generator A and the upper endofthesupply -pipeD. (See Fig. 5.) The other port I) (see Fig. 9) isadapted to connect the 5 interior of the. generator A with a conicalbranch G, forming partof the lower end of the rigid pipe forming theauxiliary burner G, and this branch G is adapted to positively connectwith the plug F, so as to turn the too latter from a closed position tothe position shown in Figs. 5 and 9, and finally to the position shownin Fig. 2, to establish communication between the generator A and theupper end of the supply-pipe D, as shown in Fig. 5.

On the plug F is secured a stop F adapted to abut against two shouldersF and F on the casing for the valve F to limit the motion of the plug F,the latter being further provided at its outer end with a recess F,adapted to be engaged by a pin G formed on the branch G, (see Fig. 3,)so that when the said pin is in position then the operator in turningthe burner G can impart a turning motion to the plug F by said pin G".The forward wall of the recess F is curved near its outer end, as isplainly illustrated in Fig. 3, so that when the operatorturns theauxiliary burner G into the uppermost position (shown in Fig. 5) thenthe pin F finally rests against the shoulder F to prevent a furthermovement of the plug F and the pin G On a further pushing on the burnerG the pin Gr lights 01% the curved wall of the recess F, so that thebranch G is moved out of engagement with the plug F.

On the extreme upper end of the pipe forming the auxiliary burner G isheld a burner G preferably provided with a perforated tip G and a shellG surrounding the tube, as is plainly shown in Fig. 12. This shell Gextends with its open end in close proximity to the e'auterizing-tool Eat the time the auxiliary burner G is in the position illustrated inFig. 1-'-that is, at the time it is desired to externally heat thecau'terizingtool E.

The internal burner for the eaut'erizing-tool E is preferably of theconstruction shown in detail in Figs. 7, S, and 12, said external burnerbeing provided with a tube D, secured to the upper end of thesupply-pipe D, and on the extreme upper end of this tube D is secured anattenuated tube D extending withinthecauterizing-tool E without touchingthe walls thereof. The tube D is surrounded by a return-pipe I), whichin turn is inclosed within a shell D forming an outlet for the productsof combustion, it being understood that the lower end of the 'pipe D isconnected by an opening D' with the space between the shellD and thepipe D In the bottom of the shell D are arranged outwardly-extendingopenings D for carrying the products of combustion to the outer air.

The operation is as follows: In starting the apparatus the operatorplaces the branch G of the auxiliary burner in engagement with thevalve=piug F, as previously explained, thevalve-plu g then being in aclosed position; that is, with its pin F resting against the shoulder FThe operator now manipulates the air-bulb C, so as to generate a gas inthe genera tor A, as previously explained, and then theoperator, havinghold of the generator A with one hand, turns the auxiliary burner G withone finger of said hand, so as to bring the burner G in properalineinent and close to the cauteri'zing-tool E, the pin F then standingin a central position; that is, between the shoulders F and F as plainlyindicated in Fig. 1. The gas from the generator A now passes through thevalve E into the branch G and the pipe of the auxiliary burner, tofinally issue through the tube G into the shell G in which theinflammable gas is ignited. The flame thus produced is directed againstthe hollow eauterizing-tool E, so as to heat the latter externally, andwhen the tool has a red heat then the operator turns the auxiliaryburner still further, so as to move the valveplug F into the positionshown in Fig. 5-that is, to connect the generator A with the upper endof the supply-pipe D. A further pressure on the burner G disconnects thelatter from the valve-plug F, owing to the pin G traveling on the curvedwall of the recess F", as previously explained. Now by the operatorkeeping up the flow of air by manipulating the bulb C more gas isgenerated in the genera tor A, and this gas passing through the L1 valveF into the supply-pipe D finally issues through the attenuated tube Dinto the interior of the red-hot caut'e'rizing tool E, so that the gasis ignited and burned within the cauterizing-tool, and consequently thelatter is heated to a white heat. of combustion of this internal burnerpass through the pipe D and opening Dfinto the shell D and through theopenings D to the outer air. Thus it will be seen that by the operatormanipulating the bulb C the cauterizing-tool E can be kept at thedesired teinperature for cauterizing purposes as long as desired.

It is understood that by the arrangement described the gas from thegenerator is util iz'ed both for externally heating thecauteriZi'ng-tool E when starting the apparatns and for supplying theinternal burner of the cauterizing-tool .with the necessary amount ofgas to keep the 'cauterizingtoolat the desired temperature during theoperation.

Having thus fully described my invent-ion, I claim as new and desire tosecure by Letters Patent-- v 1. A thermocauter, comprising ap'oint and agas-generator, an auxiliary burner forheating the point arranged to beswung into and .out of operative position, 'a rigid gas connectionbetween the auxiliary burner and the gas-generator, and a valvecontrolling said gas connection and controlled by the swinging of theauxiliary burner into and out of operative position, substantially asset forth.

2. 111 a thermocauter, the combination of a point adapted for use as aburner, a gas-generator, a rigid gas connection between the generatorand the point, an auxiliary heating device for the burner arranged to beswung into and out of operative position, and a valve controlling thegas connection between the generator and the point and controlled by theswinging of said auxiliary burner into and The products out of operativeposition, substantially as set forth.

3. In a therinoca'uter, the combination of a gas-generator, a pointadapted for use as a burner, a gas connection between the generator andthe point, avalve-casing in the said connection, a valve mounted in thecasing and controlling the flow of gas from the generator to the point,a rigid gas-pipe extending from the valve, passages formed in the valveadapted to communicate between said gas-pipe and the-gas-generator whenthe valve is turned to cut off the flow of gasfrom the generator to thepoint, and an auxiliary burner carried on said gas-pipe and arranged todirect a flame against the point when the-pipe stands i'none position,said pipe beingadapted when moved, to swing the burner out of operativeposition to turn the valve to cut off the flow of gas from the generatorto said gas-pipe, and to open the communication between the gener-- atorand the point, substantially as set forth; 4. A thermocauter, comprisinga gas-supply pipe, a hollow point supported thereon,

an attenuated tube forming the terminal of supply-pipe and extendinginto the'hollowof 1 said point, a return-pipe connected withthe hollowof thepoint and surrounding the supply-pipe and provided withperforations, and

a oasin g secured at one end to the burner and extending rearwardlytherefrom, said casing being arranged to surround the ret urn-pipe andhaving its rear end' open substantially.

as set forth. v

I FRIEDRICH D M, WVitnesses: 1

HEo. G. HOSTER,

' NO .vM.- BITTER.

